Eruptions of the Yellowstone volcanic system have included the two largest volcanic eruptions in North America in the past few million years; the third largest was at Long Valley in California and produced the Bishop ash bed.
On the diesel Passat, the TDI badge stands for Turbocharged Direct Injection, which isn't really all that helpful as the gasoline-powered Passat is also turbocharged and also uses direct injection. Volkswagen attempts to clear this up by calling this Passat the Passat TDI Clean Diesel.
Direct from Audi UK, TDV stands for Technology Development Vehicle. It basically denotes that a diesel particulate filter is present on the Audi in question but the vehicle â¦ was produced just prior to (or during) the legislation process regarding DPF's. The fusebox is located on the left side of the dash board. As you open he driver's door, you'll see the panel covering it. Feel around the edge of it and you'll see a sm â¦ all slot laarge enough to fit a flat screwdriver. Pry the panel off there.